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/*
* Copyright (c) 2020, Alliance for Open Media. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <arm_neon.h>
#include "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/sum_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
static INLINE void sse_w16_neon(uint32x4_t *sum, const uint8_t *a,
const uint8_t *b) {
const uint8x16_t v_a0 = vld1q_u8(a);
const uint8x16_t v_b0 = vld1q_u8(b);
const uint8x16_t diff = vabdq_u8(v_a0, v_b0);
const uint8x8_t diff_lo = vget_low_u8(diff);
const uint8x8_t diff_hi = vget_high_u8(diff);
*sum = vpadalq_u16(*sum, vmull_u8(diff_lo, diff_lo));
*sum = vpadalq_u16(*sum, vmull_u8(diff_hi, diff_hi));
}
static INLINE void aom_sse4x2_neon(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
uint32x4_t *sum) {
uint8x8_t v_a0, v_b0;
v_a0 = v_b0 = vcreate_u8(0);
// above line is only to shadow [-Werror=uninitialized]
v_a0 = vreinterpret_u8_u32(
vld1_lane_u32((uint32_t *)a, vreinterpret_u32_u8(v_a0), 0));
v_a0 = vreinterpret_u8_u32(
vld1_lane_u32((uint32_t *)(a + a_stride), vreinterpret_u32_u8(v_a0), 1));
v_b0 = vreinterpret_u8_u32(
vld1_lane_u32((uint32_t *)b, vreinterpret_u32_u8(v_b0), 0));
v_b0 = vreinterpret_u8_u32(
vld1_lane_u32((uint32_t *)(b + b_stride), vreinterpret_u32_u8(v_b0), 1));
const uint8x8_t v_a_w = vabd_u8(v_a0, v_b0);
*sum = vpadalq_u16(*sum, vmull_u8(v_a_w, v_a_w));
}
static INLINE void aom_sse8_neon(const uint8_t *a, const uint8_t *b,
uint32x4_t *sum) {
const uint8x8_t v_a_w = vld1_u8(a);
const uint8x8_t v_b_w = vld1_u8(b);
const uint8x8_t v_d_w = vabd_u8(v_a_w, v_b_w);
*sum = vpadalq_u16(*sum, vmull_u8(v_d_w, v_d_w));
}
int64_t aom_sse_neon(const uint8_t *a, int a_stride, const uint8_t *b,
int b_stride, int width, int height) {
int y = 0;
int64_t sse = 0;
uint32x4_t sum = vdupq_n_u32(0);
switch (width) {
case 4:
do {
aom_sse4x2_neon(a, a_stride, b, b_stride, &sum);
a += a_stride << 1;
b += b_stride << 1;
y += 2;
} while (y < height);
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
case 8:
do {
aom_sse8_neon(a, b, &sum);
a += a_stride;
b += b_stride;
y += 1;
} while (y < height);
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
case 16:
do {
sse_w16_neon(&sum, a, b);
a += a_stride;
b += b_stride;
y += 1;
} while (y < height);
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
case 32:
do {
sse_w16_neon(&sum, a, b);
sse_w16_neon(&sum, a + 16, b + 16);
a += a_stride;
b += b_stride;
y += 1;
} while (y < height);
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
case 64:
do {
sse_w16_neon(&sum, a, b);
sse_w16_neon(&sum, a + 16 * 1, b + 16 * 1);
sse_w16_neon(&sum, a + 16 * 2, b + 16 * 2);
sse_w16_neon(&sum, a + 16 * 3, b + 16 * 3);
a += a_stride;
b += b_stride;
y += 1;
} while (y < height);
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
case 128:
do {
sse_w16_neon(&sum, a, b);
sse_w16_neon(&sum, a + 16 * 1, b + 16 * 1);
sse_w16_neon(&sum, a + 16 * 2, b + 16 * 2);
sse_w16_neon(&sum, a + 16 * 3, b + 16 * 3);
sse_w16_neon(&sum, a + 16 * 4, b + 16 * 4);
sse_w16_neon(&sum, a + 16 * 5, b + 16 * 5);
sse_w16_neon(&sum, a + 16 * 6, b + 16 * 6);
sse_w16_neon(&sum, a + 16 * 7, b + 16 * 7);
a += a_stride;
b += b_stride;
y += 1;
} while (y < height);
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
default:
if (width & 0x07) {
do {
int i = 0;
do {
aom_sse8_neon(a + i, b + i, &sum);
aom_sse8_neon(a + i + a_stride, b + i + b_stride, &sum);
i += 8;
} while (i + 4 < width);
aom_sse4x2_neon(a + i, a_stride, b + i, b_stride, &sum);
a += (a_stride << 1);
b += (b_stride << 1);
y += 2;
} while (y < height);
} else {
do {
int i = 0;
do {
aom_sse8_neon(a + i, b + i, &sum);
i += 8;
} while (i < width);
a += a_stride;
b += b_stride;
y += 1;
} while (y < height);
}
#if defined(__aarch64__)
sse = vaddvq_u32(sum);
#else
sse = horizontal_add_s32x4(vreinterpretq_s32_u32(sum));
#endif // __aarch64__
break;
}
return sse;
}
#if CONFIG_AV1_HIGHBITDEPTH
static INLINE uint32_t highbd_sse_W8x1_neon(uint16x8_t q2, uint16x8_t q3) {
uint32_t sse;
const uint32_t sse1 = 0;
const uint32x4_t q1 = vld1q_dup_u32(&sse1);
uint16x8_t q4 = vabdq_u16(q2, q3); // diff = abs(a[x] - b[x])
uint16x4_t d0 = vget_low_u16(q4);
uint16x4_t d1 = vget_high_u16(q4);
uint32x4_t q6 = vmlal_u16(q1, d0, d0);
uint32x4_t q7 = vmlal_u16(q1, d1, d1);
uint32x2_t d4 = vadd_u32(vget_low_u32(q6), vget_high_u32(q6));
uint32x2_t d5 = vadd_u32(vget_low_u32(q7), vget_high_u32(q7));
uint32x2_t d6 = vadd_u32(d4, d5);
sse = vget_lane_u32(d6, 0);
sse += vget_lane_u32(d6, 1);
return sse;
}
int64_t aom_highbd_sse_neon(const uint8_t *a8, int a_stride, const uint8_t *b8,
int b_stride, int width, int height) {
const uint16x8_t q0 = { 0, 1, 2, 3, 4, 5, 6, 7 };
int64_t sse = 0;
uint16_t *a = CONVERT_TO_SHORTPTR(a8);
uint16_t *b = CONVERT_TO_SHORTPTR(b8);
int x, y;
int addinc;
uint16x4_t d0, d1, d2, d3;
uint16_t dx;
uint16x8_t q2, q3, q4, q5;
switch (width) {
case 4:
for (y = 0; y < height; y += 2) {
d0 = vld1_u16(a); // load 4 data
a += a_stride;
d1 = vld1_u16(a);
a += a_stride;
d2 = vld1_u16(b);
b += b_stride;
d3 = vld1_u16(b);
b += b_stride;
q2 = vcombine_u16(d0, d1); // make a 8 data vector
q3 = vcombine_u16(d2, d3);
sse += highbd_sse_W8x1_neon(q2, q3);
}
break;
case 8:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 16:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 32:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 16);
q3 = vld1q_u16(b + 16);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 24);
q3 = vld1q_u16(b + 24);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 64:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 16);
q3 = vld1q_u16(b + 16);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 24);
q3 = vld1q_u16(b + 24);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 32);
q3 = vld1q_u16(b + 32);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 40);
q3 = vld1q_u16(b + 40);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 48);
q3 = vld1q_u16(b + 48);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 56);
q3 = vld1q_u16(b + 56);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 128:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 16);
q3 = vld1q_u16(b + 16);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 24);
q3 = vld1q_u16(b + 24);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 32);
q3 = vld1q_u16(b + 32);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 40);
q3 = vld1q_u16(b + 40);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 48);
q3 = vld1q_u16(b + 48);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 56);
q3 = vld1q_u16(b + 56);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 64);
q3 = vld1q_u16(b + 64);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 72);
q3 = vld1q_u16(b + 72);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 80);
q3 = vld1q_u16(b + 80);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 88);
q3 = vld1q_u16(b + 88);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 96);
q3 = vld1q_u16(b + 96);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 104);
q3 = vld1q_u16(b + 104);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 112);
q3 = vld1q_u16(b + 112);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 120);
q3 = vld1q_u16(b + 120);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
default:
for (y = 0; y < height; y++) {
x = width;
while (x > 0) {
addinc = width - x;
q2 = vld1q_u16(a + addinc);
q3 = vld1q_u16(b + addinc);
if (x < 8) {
dx = x;
q4 = vld1q_dup_u16(&dx);
q5 = vcltq_u16(q0, q4);
q2 = vandq_u16(q2, q5);
q3 = vandq_u16(q3, q5);
}
sse += highbd_sse_W8x1_neon(q2, q3);
x -= 8;
}
a += a_stride;
b += b_stride;
}
}
return (int64_t)sse;
}
#endif